Cash-register.



N'o-. 723,475. PATENTED MAR. 24, 1903.

. "0; 1:". MAYER.

CASH REGISTER. APPLICATION FILED MAB. 3, 1902. 10 MODEL. {SHEETS-SHEET 1.

PHQTO-LlINQ-WASHANGTON n c PATENTED MAR. 24, 1903.

O. F. MAYER.

CASH REGISTER.

APPLICATION FILED MAB. 3, 1902.

2 SHEETSSHEBT 2.

10 MODEL.

I @firdzhanaZJ/ager M Ma n, m 5 J UNITED STATES ?ATENT OFFICE.

OTTO FERDINAND MAYER, OE BERLIN, GERMANY.

CASH-REGISTER.

$PEGIFICATION forming part of LettersPatent No. 723,475, dated March 24, 1903.

Application filed March 3, 1902 Serial No. 96,540. No model.)

down by means of the key situated nearest T0 at whom it may concern:

Be it known that I, OTTO FERDINAND MAYER, engineer, a subject of the King of Prussia, German Emperor, and a resident of 4: Oharlottenstrasse, Berlin, Kingdom of Prussia, German Empire, have invented certain new and useful Improvements in Cash- Registers, of which the following is an exact specification.

My invention relates to improvements in cash-registers, and has especially for its purpose to provide an arrangement for stopping the movement of the key-levers and indicating-wheels at the desired points. 7

My invention is represented in the accompanying drawings, in which- Figures 1 and 2 are diagrams of the keylever arrangement in difierent positions. Fig. 3 is a vertical section through part of a cash-register, showing my new arrangements.

In the accompanying drawings, a represents the keys arranged upon the keyboard 0. The key-shafts a of the keys a are guided in the keyboard 0 and in the guide-plate (1, arranged underneath the keyboard 0. In the shafts a of the keys a pins 6 are provided, which have the purpose of preventing the possibility of drawing the keys perfectly out of the keyboard. The keys a are pressed upward by means of spiral springs b, fixed to the shafts a on the one side and on the other side to the keyboard 0, wherebyit is attained that the pins 6 are always situated directly underneath the keyboard 0. Underneath the pins e a double-armed lever f, fulcrumed at g, is situated, so that by pressing the keys a downward the longer arm of the lever f, which arm is situated underneath the pins 6, is pressed downward. The shorter arm of the lever f is connected, by means of the connecting-rod 71, to the shorter arm of a lever 7:, fulcrumed atj. Now it will be clear that in case the longer arm of the lever f is pressed downward the longer arm of the lever i will be raised until it pushes against the pin e of that key by the depression of which the longer arm of the lever f was pressed downward. It is herewith attained that the downward movement of the lever f is stopped in the moment in which the lever pushes against the pin e of the respective key. If

7 now the longer arm of the lever f is pressed to the fulcrum g, the lever will swing around a larger angle than .it will swing in case it is pressed downward by means of a key situated in a greater distance from the fulcrum gthat is to say, it will swing around a larger angle before the longer arm of the lever z pushes against the respective pin cand herewith stops the swinging of the lever f. The swinging of the lever f is now transferred to the indicating-wheel is, so that the more the lever f will swing-that is to say, the nearer the key a, by means of which the swinging of the lever f is effected, is situated toward the fulcrumjthe more the wheel is will turn.

The connection between the lever f and the wheel '70 may be effected by means of a string, as indicated in Figs. 1 and 2, or a third one-armed lever 1 may be provided, as shown in Fig. 3, which lever is moved by means of a pin m, fixed to a nose of the leverf, and to the free end of which lever a string is fixed, which passes around the pulley o, fixed upon the shaft p, upon which the indicating-wheel it is also fixed. The string n is connected to a spiral spring g, which always tends to bring the three levers Z, 1,, and f into their normal position. (Shown in Fig. 3 of the drawings.) On the outer circumference of the wheel 70 numbers are printed, and the whole mechanism is adjusted so that in case one of the keys a, which are also provided with numbers, is pressed downward the wheel 70 turns until the number corresponding to the number of the respective key is situated behind the cut-out 7, provided in the casing s of the' apparatus.

In order to avoid inaccuracies which might arrive by the wheel 70 in consequence of the his m'oa swinging too far, a ratchet-wheelt with spiral-formed circumference is provided. At the side of this ratchet-wheel one arm of a double-armed lever a, fulcrumed at o, is situated, to which arm a-pin w is fixed, which engages with the teeth of the ratchet-wheel 15. Now the other arm of this double-armed lever o is situated underneath a nose f of the lever f, so that the situation of the pin w depends upon the situation of the lever f. If the wheel 70 is turned (by pressing down one of the keys a) in the direction of the arrows shown in the drawings, the pin 20, fixed to the lever to on account of the nose f being raised and taking the lower arm of the lever "it, which is connected with the nose f by means of the spiral spring a, along, will move toward the axle 19. As soon as the swinging of the lever f stops the pin 10 is situated at the spot corresponding to the situation of the leverf-that is to say, the pinwis situated in the same distance from the axlep in which that tooth of the ratchet-wheel t which in this moment should engage with the pin 1) is situated from the shaft 19. In case now the wheel It turns too far on account of the MS m'va of the same it will return immediately by the action of the spiral spring q until the respective tooth of the ratchet-wheel t engages with the pin w, the position of which corresponds to the position of the lever f.

In order to hold the key a which has been pressed downward in its position, pins :0 are provided on the lower ends of the key-shafts a, and the connecting-rod his provided with noses 1 which in case the key a has been pressed down and the connecting-rod h has consequently moved to the left-hand side engage with the pins as of the key-shaft and herewith hold the keys in their depressed position, herewith holding also the indicating-wheel in its position. In order to release the indicating-wheel and the key, the pin to must be disengaged of the ratchet-Wheel If, so that the lever mechanism returns to its normal position by the action of the spiral spring q, hereby bringing also the connecting-rod h back to its normal position and releasing the respective nose 1 from the respective pin 00, so that the key will return to its normal position by the action of the spiral spring I) of the'same.

In the construction shown in the drawings in Fig. 3 the upper sides of the leversfand t' are curved, which has the purpose of attaining that all the keys must be pressed down for the same distance until their movement is stopped butit will be understood that these upper sides may also be straight, as is shown in the diagrams shown in Figs. 1 and 2 of the drawings.

Having thus fully described the nature of my said invention, whatIdesire to secure by Letters Patent of the United States is- 1. In a cash-register, the combination of a two-armed key-lever, a series of normally elevated spring-actuated keys provided with pins projecting above the longer arm of the key-lever, with a second two-armed lever, the longer arm of which is situated at the side of the longer arm of the key-lever, and the fulcrum of which is situated opposite to the fulcrum of the key-lever, a connecting-rod connecting the shorter arms of both levers, an indicating mechanism and means for transferring the movement of the levers to the indicating mechanism, substantially as described and for the purpose set forth;

2. In a cash-register, the combination of a two-armed key-lever, a series of normally elevated, spring-actuated keys provided with pins projecting above the longer arm of the key-lever, with a second two-armed lever, the longer arm of which is situated at the side of the longer arm of the key-lever, and the fulcrum of which is situated opposite to the fulcrum of the key-lever, a connecting-rod connecting the shorter arms of both levers, an indicating-wheel and a string for transferring the movement of the levers to this indicating wheel, substantially as described and for the purpose set forth.

3. In a cash-register, the combination of a two-armed key-lever, a series of normally elevated spring-actuated keys provided with pins projecting above the longer arm of the key-lever, with a second two-armed lever, the

longer arm of which is situated at the side ofthe longer arm of the key-lever, and the frilcrum of which is situated opposite to the fulcrum of the key-lever, a connecting-rod con necting the shorter arms of both levers, an indicating-Wheel, a string for transferring the movement of the levers to this indicatingwheel, a two-armed lever moved by a nose fixed to the key-lever and provided with a pin, and a spiral-formed ratchet-wheel, the teeth of which engage with the pin of this lever, substantially as described and for the purpose set forth.

4. In a cash-register, the combination of two-armed key-lever, a series of normally elevated spring-actuated keys provided with pins projecting above the longer arm of the key-lever, with a second two-armed lever, the longer arm of which is situated at the side of the longer arm of the key-lever, and the fulcrum of which is situated opposite to the fulcrum of the key-lever, a connecting-rod connecting the shorter arms of both levers, an

indicating-wheel, a string for transferring the movement of the levers to this indicatingwheel, a two-armed lever moved by a nose fixed to the key-lever and provided with a pin, a spiral-formed ratchet-wheel, the teeth of which engage with the pin of this lever, pins provided at the lower ends of the keyshafts, and noses fixed to the connecting-rod connecting the shorter arms of the levers first mentioned, said noses being adapted to engage with the pins at the lower ends of the key-shafts as soon as the levers begin to move, substantially as described and for the purpose set forth.

5. In a cash-register, the combination of a two-armed key-lever,a series of normally elevated spring-actuated keys provided with pins projecting above the longer arm of the key-lever, with a second two-armed lever, the longer arm of which is situated at the side of the longer arm of the key-lever, and the fulcrum of which is situated opposite to theful- IIO 10 to engage with the pins at the lower ends of the key-shafts if the keys are in their depressed position, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of I5 two subscribing witnesses.

OTTO FERDINAND MAYER. Witnesses:

WOLDEMAR HAUPT, HENRY HASPER. 

